it seems jar files related to DataImport Handler are not being loaded in memory.Try to copy Data Import Handler related jars to solr_home/lib directory and restart the servlet container. -----Thanx: Grijesh www.gettinhahead.co.in -- View this message in context: http://lucene.472066.n3.nabble.com/SOLR-startup-problem-tp2879789p2880022.html Sent from the Solr - User mailing list archive at Nabble.com.